Is there a way to create a footer within a map itself?

Is there a way to insert a footer into the map itself? I know you can do it when printing, but I am trying to figure out how to embed that information (for example, the date a map was created) into an exported document. There is a place for a footer in the Word export options, but it doesn't appear to allow you to make it a field that can be populated with meta-data from the map itself.